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68801777 = 116254707
BaseRepresentation
bin1000001100111…
…01010011110001
311210110111021222
410012131103301
5120103124102
610454354425
71463543162
oct406352361
9153414258
1068801777
1135922880
121b05ba15
131133c315
1491cd769
156090aa2
hex419d4f1

68801777 has 4 divisors (see below), whose sum is σ = 75056496. Its totient is φ = 62547060.

The previous prime is 68801713. The next prime is 68801779. The reversal of 68801777 is 77710886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68801777 - 26 = 68801713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68801779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3127343 + ... + 3127364.

It is an arithmetic number, because the mean of its divisors is an integer number (18764124).

Almost surely, 268801777 is an apocalyptic number.

It is an amenable number.

68801777 is a deficient number, since it is larger than the sum of its proper divisors (6254719).

68801777 is a wasteful number, since it uses less digits than its factorization.

68801777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254718.

The product of its (nonzero) digits is 131712, while the sum is 44.

The square root of 68801777 is about 8294.6836588263. The cubic root of 68801777 is about 409.7634506997.

The spelling of 68801777 in words is "sixty-eight million, eight hundred one thousand, seven hundred seventy-seven".

Divisors: 1 11 6254707 68801777